US9717043B2 - Regulation by MSC server when using SGs/Gs - Google Patents

Regulation by MSC server when using SGs/Gs Download PDF

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Publication number
US9717043B2
US9717043B2 US13/128,544 US200913128544A US9717043B2 US 9717043 B2 US9717043 B2 US 9717043B2 US 200913128544 A US200913128544 A US 200913128544A US 9717043 B2 US9717043 B2 US 9717043B2
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subscriber
ims
registration
access
control node
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US20110306321A1 (en
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Ralf Keller
Fredrik Lindholm
Magnus Olsson
Jian Wang
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/24—Interfaces between hierarchically similar devices between backbone network devices

Definitions

  • VoIP Voice over Internet Protocol
  • DSL Digital Subscriber Line
  • WLAN Wireless Local Area Network
  • EPC Evolved Packet Core
  • EPS Evolved Packet System
  • RAN Radio Access Network
  • SA2 3GPP Technical Specification 23.216
  • IMS voice call from a EPS based (access) network towards a CS based (access) network
  • SRVCC Single Radio Voice Call Continuity
  • the architecture shown in FIG. 2 is similar to the SRVCC architecture shown in FIG. 1 . Further, a SGs interface between a MME and a MSC Server is depicted.
  • FIG. 3 an exemplary architecture of a telecommunications network for an user equipment attaching to UTRAN/GERAN access networks and to an eUTRAN access network (depicted as E-UTRAN) is illustrated.
  • E-UTRAN eUTRAN access network
  • the MSC Server may register the user in IMS, as described in the 3GPP Technical Specification 23.292. It may be noted that the Technical Specification 23.292 does not discuss the case of performing a circuit switched attachment procedure of the UE via the SGs interface.
  • the SCC AS Service Centralization and Continuity Application Server
  • T-ADS Terminating Access Domain Selection
  • S-CSCF Serving-Call Session Control Function
  • the SGs may be used in SRVCC to avoid interacting with the Home Subscriber Server (HSS)/Home Location Register (HLR) during performing a handover from a packet switched access such as the eUTRAN access/High Speed Packet Access (HSPA) towards a circuit switched (CS) access. It may take up to several seconds to download subscriber data from the HLR in a visited network. This delay may be unacceptable for SRVCC, however, the solution currently described in the 3GPP Technical Specification 23.216 may not make use of the SGs interface.
  • HSS Home Subscriber Server
  • HLR Home Location Register
  • HSPA High Speed Packet Access
  • CS circuit switched
  • IMS IP Multimedia Subsystem
  • IMS IP Multimedia Subsystem
  • One or more embodiments herein enable a Mobile Switching Center (MSC) Server and an IP Multimedia Subsystem (IMS) to perform the following.
  • MSC Mobile Switching Center
  • IMS IP Multimedia Subsystem
  • a method of circuit switched registering a subscriber in an IP Multimedia Subsystem may be provided.
  • the method may be executed by a call control node.
  • the method may comprise receiving an access request of the subscriber for circuit switched accessing the IMS, the access request being received via an access, determining an access type of the access, and sending a registration request for circuit switched registering the subscriber in the IMS depending on the determed access type.
  • the call control node may be adapted to perform a method described above.
  • circuit switched registering may particularly denote a procedure which a subscriber may perform or use to register in at least one of a network, a logical entity of a network, a node of a network, and a service in a circuit switched (based) way.
  • a subscriber may camp on a circuit switched (based) access network or a packet switched (based) access network and may or may not packet switched (based) register.
  • FIGS. 7A, 7B, 7C, 7D are flow diagrams illustrating methods of circuit switched registering a subscriber in the IMS and of terminating a session to a subscriber according to another exemplary embodiments of the invention.
  • the access may comprise at least one of an interface to the call control node and an access network via which the subscriber may access the call control node.
  • Sending the registration consideration indication may be at least one of simultaneously or subsequently to sending the registration request.
  • Sending the registration consideration indication may be upon determining that the access type may be a circuit switched type, wherein the registration consideration indication may comprise an indication that the SCC AS shall consider the registration when terminating the session to the subscriber.
  • the method may comprise sending a further registration request for circuit switched registering the subscriber in the IMS depending on the determined access type and sending a further registration consideration indication whether a Service Centralization and Continuity Application Server (SCC AS) of the IMS may be intended to consider the registration of the subscriber in the IMS when terminating a session to the subscriber depending on the determined access type, wherein sending the further registration consideration indication may be upon determining that the access type may be a circuit switched type, wherein the further registration consideration indication may comprise an indication that the SCC AS can consider the registration when terminating the session to the subscriber.
  • SCC AS Service Centralization and Continuity Application Server
  • Sending a further registration request may be based on a further access request of the subscriber for circuit switched accessing the IMS, the further access request being received via an access.
  • Receiving the access request may comprise receiving at least one of an initial location update request and a location update request.
  • FIG. 5 a method of terminating a session to a subscriber according to an exemplary embodiment of the invention will be described.
  • the method is executed by a Service Centralization and Continuity Application Server SCC AS.
  • the method comprises receiving a registration request for circuit switched registering a subscriber in an IP Multimedia Subsystem (IMS), as is indicated by a block 502 . Further, the method comprises circuit switched registering the subscriber in the IMS, as is indicated in a block 504 .
  • the method further comprises determining whether the registration is intended to be considered when terminating the session to the subscriber, as is indicated by a block 506 .
  • the method also comprises terminating the session to the subscriber, as is indicated by a block 508 .
  • IMS IP Multimedia Subsystem
  • Circuit switched registering the subscriber in the IMS may be based on the received registration request.
  • Determining may comprise receiving a registration consideration indication whether the registration of the subscriber in the IMS shall be considered when terminating the session to the subscriber.
  • the method may comprise receiving a further registration request for circuit switched registering the subscriber in the IMS, wherein determining may comprise receiving a further registration consideration indication whether a Service Centralization and Continuity Application Server (SCC AS) of the IMS may be intended to consider the registration of the subscriber in the IMS when terminating a session to the subscriber.
  • SCC AS Service Centralization and Continuity Application Server
  • the method may comprise further circuit switched registering the subscriber in the IMS based on the received further registration request.
  • the method may comprise further determining whether the further registration may be intended to be considered when terminating the session to the subscriber. Determining and further determining may be at least one of simultaneously and subsequently to one another.
  • Determining may comprise fetching status information of an access type of the access via which the subscriber may access the IMS.
  • Determining may comprise receiving a subscriber preference indication whether to consider the registration when terminating the session to the subscriber.
  • FIG. 6A-6C a method of circuit switched registering a subscriber in the IMS and of terminating a session to a subscriber according to another exemplary embodiments of the invention is illustrated.
  • an enhanced solution may follow the rule of thumb “Register (the subscriber) but do not terminate calls or sessions (to the subscriber)”, which will be described in the following with reference to FIG. 7A-7D .
  • the MSC Server may know that the subscriber UE is (E)PS-attached (see, for example, the 3GPP Technical Specification 23.272).
  • Else is the case when the UE is camping on UTRAN or GERAN (GSM EDGE Radio Access Network) access networks. That is, the MSC Server receives the location update via the Iu-cs interface, the A interface or the Gs interface.
  • GSM EDGE Radio Access Network GSM EDGE Radio Access Network
  • the MSC Server then registers the ICS subscriber in the IMS but indicates in the registration that this registration shall be considered when performing a T-ADS.
  • the MSC server may include support for MMTEL and audio (/video) capabilities, for example, support for at least one of audio capabilities and of audio and video capabilities, and alternatively or in addition, may include a feature tag in the contact such as the tag “3gpp.ics_tads”.
  • the SCC AS receives this indication when one or more filter criteria are directing the S-CSCF to send a 3-party REGISTER (command) to the SCC AS.
  • the SCC AS may use this indication such that this contact is not selected when performing a T-ADS, as is specified in the 3GPP Technical Specification 23.292 and 23.237.
  • FIG. 7C it is referred to FIG. 7C .
  • a MSC Server when receiving an appropriate message such as an attach/location update message via the Gs interface, performs the following:
  • the MSC Server may indicate in or along the registration that the registration should be considered when performing a T-ADS.
  • the SCC AS receives this indication when one or more filter criteria are directing the S-CSCF to send a 3 -party REGISTER (command) to the SCC AS.
  • the SCC AS when the SCC AS successfully performs a session transfer, and if the contact for the transferring-in domain is marked as “not consider when performing T-ADS”, then this contact should be marked as “consider when performing T-ADS”.
  • This procedure may be performed by the SCC AS. This may be beneficial for the SRVCC case when a MSC Server enhanced for SRVCC performs first a session transfer before being able to update the registration in the IMS indicating that the contact can be selected when performing a T-ADS.
  • an UE also may make use of appropriate flags such as the flag “3gpp.ics.no_tads”.
  • An UE which may be simultaneously connected to more than one access network, particularly to at least two PS access networks, may want to use one or more of these for originated calls but might want all terminating calls only via one particular access. This may be useful in in-home scenarios or applications but also for session continuity applications, in which the UE should be able to origin a session transfer request on an Internet Protocol Connectivity Access Network (IP CAN) but may not want to receive terminating sessions over this IP CAN until the UE has completed the session transfer.
  • IP CAN Internet Protocol Connectivity Access Network
  • the UE may need to (re-)register to indicate towards the SCC AS to consider this access for terminating sessions.
  • FIG. 8 illustrates a constitution of a call control node 800 according to an exemplary embodiment of the invention.
  • the call control node 800 is adapted as MSC Server.
  • the call control node 800 comprises a receiving unit 802 for receiving an access request of a subscriber for circuit switched accessing the IMS, the access request being received via an access. Further, the call control node 800 comprises a determining unit 804 for determining an access type of the access, and a sending unit 806 for sending a registration request for circuit switched registering the subscriber in the IMS depending on the determined access type.
  • the determining unit 804 may be part of a processing unit, particularly a processor, in which appropriate algorithms may be executed to perform the determined access type.
  • the sending unit 806 is also adapted to send a registration consideration indication whether a SCC AS of the IMS is intended to consider the registration of the subscriber in the IMS when terminating a session to the subscriber depending on the determined access type.
  • the sending unit 806 is also adapted to send a further registration request for circuit switched registering the subscriber in the IMS depending on the determined access type and is adapted to send a further registration consideration indication whether a Service Centralization and Continuity Application Server (SCC AS) of the IMS is intended to consider the registration of the subscriber in the IMS when terminating a session to the subscriber depending on the determined access type.
  • the call control node 800 may comprise at least one further sending unit which may be adapted to perform at least one of the latter described functionalities.
  • FIG. 9 illustrates a constitution of a call control node 900 for performing terminating a session to a subscriber according to an exemplary embodiment of the invention.
  • the call control node 900 is adapted as SCC AS.
  • the receiving unit 902 is further adapted to receive a registration consideration indication whether the registration of the subscriber in the IMS is intended to be considered when terminating the session to the subscriber.
  • the receiving unit 902 is also adapted to receive a further registration request for circuit switched registering a subscriber in the IMS and is adapted to receive a further registration consideration indication whether the registration of the subscriber in the IMS is intended to be considered when terminating the session to the subscriber.
  • the call control node 900 may comprise at least one further receiving unit which may be adapted to perform at least one of the latter described functionalities.
  • the registering unit 904 , the determining unit 906 and/or the terminating unit 908 may be designed as one common unit. In particular, at least two of the registering unit 904 , the determining unit 906 and the terminating unit 908 may be designed as one common unit.
  • the call control node 900 comprises a further sending unit 910 adapted to send a termination command indicating a termination of a session or a call to a subscriber.
  • the call control node 900 comprises a storage unit 912 for storing information necessary during registering a subscriber in the IMS and/or terminating a session to a subscriber.
  • the storage unit 912 is adapted to be accessed by at least one of the registering unit 904 , the determining unit 906 and the terminating unit 908 .
  • the storage 912 unit may also not part of the call control node 900 but be designed as an independent unit.
  • the ICS solution may be enhanced such that the user may be registered by the MSC Server based on attach via a Gs interface.
  • the SRVCC solution may be enhanced such that the SCC AS may determine precisely when a contact registered by the MSC Server shall be used for T-ADS or not.
  • eNB refers to eNode B
  • EPS refers to Evolved Packet System
  • ICS refers to IMS Centralized Services
  • SRVCC refers to Single Radio Voice Call Continuity
  • STI Session Transfer URI (according to the 3GPP Technical Specification 23.237);
  • STN Session Transfer Number
  • T-ADS refers to Terminating Access Domain Selection (according to the 3GPP Technical Specifications 23.292 and 23.237).

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
US13/128,544 2008-11-11 2009-11-09 Regulation by MSC server when using SGs/Gs Active 2034-03-04 US9717043B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/128,544 US9717043B2 (en) 2008-11-11 2009-11-09 Regulation by MSC server when using SGs/Gs

Applications Claiming Priority (3)

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US11337908P 2008-11-11 2008-11-11
US13/128,544 US9717043B2 (en) 2008-11-11 2009-11-09 Regulation by MSC server when using SGs/Gs
PCT/EP2009/064841 WO2010055012A2 (fr) 2008-11-11 2009-11-09 Inscription par un serveur msc lors de l'utilisation de passerelles de signalisation et de passerelles

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US20110306321A1 US20110306321A1 (en) 2011-12-15
US9717043B2 true US9717043B2 (en) 2017-07-25

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US (1) US9717043B2 (fr)
EP (1) EP2366258B1 (fr)
CN (2) CN103747506B (fr)
BR (1) BRPI0921756A2 (fr)
DK (1) DK2366258T3 (fr)
NZ (1) NZ592796A (fr)
WO (1) WO2010055012A2 (fr)

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WO2010055012A2 (fr) * 2008-11-11 2010-05-20 Telefonaktiebolaget L M Ericsson (Publ) Inscription par un serveur msc lors de l'utilisation de passerelles de signalisation et de passerelles
SG177325A1 (en) * 2009-06-29 2012-02-28 Research In Motion Ltd System and methods for accessing voice services based on voice service indicators in an evolved packet system
BRPI1014149A2 (pt) * 2009-06-29 2019-09-24 Research In Motion Ltd sistema e método para serviço de voz em um sistema de pacote evoluído.
EP2449824B1 (fr) * 2009-06-30 2016-10-05 Telefonaktiebolaget LM Ericsson (publ) Traitement d'informations de capacité d'accès dans un réseau mobile
PT2491705T (pt) * 2009-10-23 2019-01-28 Ericsson Telefon Ab L M Relatório de li de informações de localização atualizadas para eps
CN102378148B (zh) * 2010-08-23 2016-06-01 中兴通讯股份有限公司 终端、hss、及核心网网元获知终端能力的方法和系统
CN103190187B (zh) * 2010-11-12 2016-10-26 瑞典爱立信有限公司 Ims架构中的分组交换到电路交换接入切换
CN102612102B (zh) * 2011-01-19 2017-06-06 中兴通讯股份有限公司 Cs域控制网元获取ps域控制网元的信息的方法及系统
EP3139675A1 (fr) 2011-05-03 2017-03-08 Huawei Technologies Co., Ltd. Procédé et dispositif d'émission de message court d'un système de paquets évolués à un terminal d'utilisateur
EP3001726B1 (fr) * 2013-06-13 2020-03-25 Huawei Technologies Co., Ltd. Procédé et dispositif de mise en oeuvre de la continuité d'appels vocaux radio uniques
CN113423102A (zh) * 2013-12-26 2021-09-21 中兴通讯股份有限公司 一种业务域和接入域综合决策的设备及呼叫路由的方法
FR3036573A1 (fr) 2015-05-22 2016-11-25 Orange Procede et dispositif de traitement d'un message de signalisation relatif a un service de communication d'un equipement client
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Publication number Publication date
EP2366258A2 (fr) 2011-09-21
NZ592796A (en) 2013-12-20
DK2366258T3 (da) 2013-02-11
BRPI0921756A2 (pt) 2017-03-28
CN103747506A (zh) 2014-04-23
WO2010055012A3 (fr) 2010-12-09
CN102210177A (zh) 2011-10-05
CN102210177B (zh) 2015-09-30
CN103747506B (zh) 2017-08-18
WO2010055012A2 (fr) 2010-05-20
EP2366258B1 (fr) 2012-10-31
US20110306321A1 (en) 2011-12-15

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